<template>
  <a-drawer width='35%' :label-col='4' :wrapper-col='14' :visible='open' @close='onClose'>
    <a-divider orientation='left'>
      <b>{{ formTitle }}</b>
    </a-divider>
    <a-form-model ref='form' :model='form' :rules='rules'>
      <a-form-model-item label='角色名称' prop='roleName'>
        <a-input v-model='form.roleName' placeholder='请输入' />
      </a-form-model-item>
      <a-form-model-item prop='roleKey'>
        <span slot='label'>
          权限字符
          <a-tooltip>
            <template slot='title'>
              控制器中定义的权限字符，如：@PreAuthorize(`@ss.hasRole('admin')`)
            </template>
            <a-icon type='question-circle-o' />
          </a-tooltip>
        </span>
        <a-input v-model='form.roleKey' placeholder='请输入' />
      </a-form-model-item>
      <a-form-model-item label='排序' prop='roleSort'>
        <a-input-number placeholder='请输入' v-model='form.roleSort' :min='0' style='width: 100%' />
      </a-form-model-item>
      <a-form-model-item label='状态' prop='status'>
        <a-radio-group v-model='form.status' button-style='solid'>
          <a-radio-button v-for='(d, index) in statusOptions' :key='index' :value='d.dictValue'>{{ d.dictLabel }}
          </a-radio-button>
        </a-radio-group>
      </a-form-model-item>
      <a-form-model-item label='菜单权限'>
        <a-checkbox @change='handleCheckedTreeExpand($event)'>
          展开/折叠
        </a-checkbox>
        <a-checkbox @change='handleCheckedTreeNodeAll($event)'>
          全选/全不选
        </a-checkbox>
        <a-checkbox @change='handleCheckedTreeConnect($event)' :checked='form.menuCheckStrictly'>
          父子联动
        </a-checkbox>
        <a-tree
          v-model='menuCheckedKeys'
          checkable
          :checkStrictly='!form.menuCheckStrictly'
          :expanded-keys='menuExpandedKeys'
          :auto-expand-parent='autoExpandParent'
          :tree-data='menuOptions'
          @check='onCheck'
          @expand='onExpandMenu'
          :replaceFields='defaultProps'
        />
      </a-form-model-item>
      <a-form-model-item label='备注' prop='remark'>
        <a-input v-model='form.remark' placeholder='请输入' type='textarea' allow-clear />
      </a-form-model-item>
      <div class='bottom-control'>
        <a-space>
          <a-button type='primary' :loading='submitLoading' @click='submitForm'>
            保存
          </a-button>
          <a-button type='dashed' @click='cancel'>
            取消
          </a-button>
        </a-space>
      </div>
    </a-form-model>
  </a-drawer>
</template>

<script>

import { addRole, getRole, updateRole } from '@/api/system/role'
import { roleMenuTreeselect, treeselect as menuTreeselect } from '@/api/system/menu'

export default {
  name: 'CreateForm',
  props: {
    statusOptions: {
      type: Array,
      required: true
    }
  },
  components: {},
  data() {
    return {
      submitLoading: false,
      menuExpandedKeys: [],
      autoExpandParent: false,
      menuCheckedKeys: [],
      halfCheckedKeys: [],
      menuOptions: [],
      formTitle: '',
      // 表单参数
      form: {
        roleId: undefined,
        roleName: undefined,
        roleKey: undefined,
        roleSort: 0,
        status: '0',
        menuIds: [],
        menuCheckStrictly: true,
        remark: undefined
      },
      open: false,
      menuExpand: false,
      menuNodeAll: false,
      rules: {
        roleName: [{ required: true, message: '角色名称不能为空', trigger: 'blur' }],
        roleKey: [{ required: true, message: '权限字符不能为空', trigger: 'blur' }],
        roleSort: [{ required: true, message: '显示顺序不能为空', trigger: 'blur' }]
      },
      defaultProps: {
        children: 'children',
        title: 'label',
        key: 'id'
      }
    }
  },
  filters: {},
  created() {
  },
  computed: {},
  watch: {},
  methods: {
    onExpandMenu(expandedKeys) {
      this.menuExpandedKeys = expandedKeys
      this.autoExpandParent = false
    },
    /** 查询菜单树结构 */
    getMenuTreeselect() {
      menuTreeselect().then(response => {
        this.menuOptions = response.data
      })
    },
    // 所有菜单节点数据
    getMenuAllCheckedKeys() {
      // 全选与半选
      return this.menuCheckedKeys.concat(this.halfCheckedKeys)
    },
    getAllMenuNode(nodes) {
      if (!nodes || nodes.length === 0) {
        return []
      }
      nodes.forEach(node => {
        this.menuCheckedKeys.push(node.id)
        return this.getAllMenuNode(node.children)
      })
    },
    // 回显过滤
    selectNodefilter(nodes, parentIds) {
      if (!nodes || nodes.length === 0) {
        return []
      }
      nodes.forEach(node => {
        // 父子关联模式且当前元素有父级
        const currentIndex = this.menuCheckedKeys.indexOf(node.id)
        // 当前节点存在,且父节点不存在，则说明父节点应是半选中状态
        if (currentIndex !== -1) {
          parentIds.forEach(parentId => {
            if (this.halfCheckedKeys.indexOf(parentId) === -1) {
              this.halfCheckedKeys.push(parentId)
            }
          })
          parentIds = []
        }
        // 防重
        const isExist = this.halfCheckedKeys.indexOf(node.id)
        const isExistParentIds = parentIds.indexOf(node.id)
        if (isExist === -1 && isExistParentIds === -1 && currentIndex === -1) {
          parentIds.push(node.id)
        }
        return this.selectNodefilter(node.children, parentIds)
      })
    },
    handleCheckedTreeNodeAll(value) {
      if (value.target.checked) {
        this.getAllMenuNode(this.menuOptions)
      } else {
        this.menuCheckedKeys = []
        this.halfCheckedKeys = []
      }
    },
    handleCheckedTreeExpand(value) {
      if (value.target.checked) {
        const treeList = this.menuOptions
        for (let i = 0; i < treeList.length; i++) {
          this.menuExpandedKeys.push(treeList[i].id)
        }
      } else {
        this.menuExpandedKeys = []
      }
    },
    // 树权限（父子联动）
    handleCheckedTreeConnect(value) {
      this.form.menuCheckStrictly = !this.form.menuCheckStrictly
    },
    /** 根据角色ID查询菜单树结构 */
    getRoleMenuTreeselect(roleId) {
      return roleMenuTreeselect(roleId).then(response => {
        this.menuOptions = response.menus
        return response
      })
    },
    onCheck(checkedKeys, info) {
      if (!this.form.menuCheckStrictly) {
        let currentCheckedKeys = []
        if (this.menuCheckedKeys.checked) {
          currentCheckedKeys = currentCheckedKeys.concat(this.menuCheckedKeys.checked)
        }
        if (this.menuCheckedKeys.halfChecked) {
          currentCheckedKeys = currentCheckedKeys.concat(this.menuCheckedKeys.halfChecked)
        }
        this.menuCheckedKeys = currentCheckedKeys
      } else {
        // 半选节点
        this.halfCheckedKeys = info.halfCheckedKeys
        this.menuCheckedKeys = checkedKeys
      }
    },
    onClose() {
      this.open = false
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.reset()
    },
    // 表单重置
    reset() {
      if (this.$refs.menu !== undefined) {
        this.menuCheckedKeys = []
        this.halfCheckedKeys = []
      }
      this.menuExpand = false
      this.menuNodeAll = false
      this.menuExpandedKeys = []
      this.autoExpandParent = false
      this.menuCheckedKeys = []
      this.halfCheckedKeys = []
      this.form = {
        roleId: undefined,
        roleName: undefined,
        roleKey: undefined,
        roleSort: 0,
        status: '0',
        menuIds: [],
        menuCheckStrictly: true,
        remark: undefined
      }
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset()
      this.getMenuTreeselect()
      this.open = true
      this.formTitle = '添加角色'
    },
    /** 修改按钮操作 */
    handleUpdate(row, ids) {
      this.reset()
      const roleId = row ? row.roleId : ids
      const roleMenu = this.getRoleMenuTreeselect(roleId)
      getRole(roleId).then(response => {
        this.form = response.data
        this.open = true
        this.$nextTick(() => {
          roleMenu.then(res => {
            this.menuCheckedKeys = res.checkedKeys
            // 过滤回显时的半选中node(父)
            if (this.form.menuCheckStrictly) {
              this.selectNodefilter(this.menuOptions, [])
            }
          })
        })
        this.formTitle = '修改角色'
      })
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs.form.validate(valid => {
        if (valid) {
          this.submitLoading = true
          if (this.form.roleId !== undefined) {
            this.form.menuIds = this.getMenuAllCheckedKeys()
            updateRole(this.form).then(response => {
              this.$message.success(
                '修改成功',
                3
              )
              this.open = false
              this.$emit('ok')
            }).finally(() => {
              this.submitLoading = false
            })
          } else {
            this.form.menuIds = this.getMenuAllCheckedKeys()
            addRole(this.form).then(response => {
              this.$message.success(
                '新增成功',
                3
              )
              this.open = false
              this.$emit('ok')
            }).finally(() => {
              this.submitLoading = false
            })
          }
        } else {
          return false
        }
      })
    }
  }
}
</script>
